Spiral bed-spring and similar structure.



w. E. FRANK. SPIRAL BED SPRINGAND SIMILAR smucnms.

APPLICATION FILED MAY 8. I916.

- Patented Nov.- 6, 1917 muss: minim, on em. some, sizissocm, ASSIGNQETi) 1* EELZB snow-Ens ice-ire nse rnszn'e cos-wens, c2 s1. LOUIS,MISSOURI, A eeneoeesion" cs SPIRAL BED-SPRING AND SIMILAR STRUGT'Ussplieetion filed may 8, 1818. Serial No. 95,356,

' are provided with vertically-disposed, spire-l springs which form aresilient supporting structure. 1

The main ob ect of my invention is to provid a structure of thecharacter referred to in which the spiral springs are Lied to each otherin e novel manner.

And another object is to provide a, connecting device adapted to he imdfor tying spiral springs-together, and also for other purposes, which isso constructed that it can be securely locked with the member with whichis cooperates by simply snapping said device into engagement with saidmember.

' Figure l of she drawings is s. top plan View of e portion of a spiralbed spring, spring sees-or similar structure constructed in accordancewith my invention.

Fig. 2 is :1 vertical cross-sectional view of same, taken on the line2-2 of Fig. 1.

Fig. 3 is an enlarged top plan view oi s portion of myimproved-connecting device arranged in engagement with a spiral spring;and v Fig. i is a side elevationel view of said device.

Referring to the drawings, which illustrots the preferred form of myinvention, A and B designate the top and bottom frames, respectively, ofa, bed spring or similar structure, and C designates vertiwily-disposed,spiral springs that are zerranged between said-frames and which arecombined with same in such c manner that they cooperate with the topframe A to form a resilient 'snnpor'ting structure. The

springs C herein shoi gn. are single cone spiral springs, butitis'fimniQteiial, so far as my broad idea, is concerneiwvhether thespiral springs of the structure are single cone springs or double conesp 'ings. The

springs C that are arranged adjacent the outer edge of the structurehave their top fipeeificataon'of lletters Entent.

Pesensed New 6, i913",

coils connected to the frame ii. end the inscrmediete springs have theiriied be outer springs, preferably .hy of connecting devices of. novelconstruction that will be hereinafter described, The top frame A. isangle-shaped in cross section and is preferably formed from commerciallyrolled angle iron, the sop flange 1 of said frame projecting inwardlyove= the top coils ofthe springs C at the outer edge off the structure,and the vertical flmge of said frame projecting downwardly c er said lop,-coils, as shown in Fig. 2. The tsp coils of the springs at she outeredge of the structure are connected to the frame A by rivets of othersuitable fastening devices 2 that case through the top l of the framei-i suche manner that the top coils of the springs will be arrangedbetween the vertical fiange 2' of the frame A and the shanks cf. therivets 3, said rivets being piovided with heads ,3 that lap over theundersidcs of the top coils of the outer springs, and thus so curelyclamp same to the underside of the horizontal flange 1 cfthe top frameA. if desired, the top coils of the outer springs may be provided withnocches or recesses 25*, as shown in broken lines in Fig. l, thee receive the shanks of the rive ss 3., thus prevent the springs G oi theouter edge oi the structure from turning or frommoving longitudinally ofthe members of the top frame A to which the top coils of seid springsare connected. By iroviding the each other end to the iop'coils of 'tlicas I top frame A of the structure with lawn sngu- -lerly-disposedflanges it .is possible to securcly connect 'tne-top coils of'the out-e"springs to said frame by of rivets or other suiiable headed fasteningdevices,'e single rivet being ample for each spring on account, of thefeel that the'notch or recess 3 in the spring that; receives theshank-of the rivet prevents the spring from turning or from movinglongitudinally of the por tion of the frame to which it connected, Ifdesired, each of the four springs it the corners of the frame A can heco'nnecn to said frame by means of two rivets, as shown in Fig. 1.

ne intermediate springs of the structure are tied together and also tiedto the springs at the outer edge of thestructure by connecting deviceswhich are fastened to the top coils of said springs Any suitable.

type of connecting device may be used for this purpose, but i prefer totie most of the springs together by means of connecting devices Dwl'lioh-are so constructed that they can be securely locked to thesprings C by simply snapping seid devices l) into engage meet ivi thetop coils of said springs. if

oil

the structure is provided with one or more trusses E, as herein shown,each truss will have its upper portion connected to four of theintermediate springs by two crossed clios E riveted or connected in. anyother suitable manner to the truss and having their end portions bentover or wrapped around the coils of-the springs C with which theycooperate, as shown in Figs. 1 and Each of the connecting devices Dpreviously referred to is provided at each end with a coil 10 and with atongue 11 arranged at an angle to its cooperating coil 10 and having itsterminal bent downwardly toward the center of the coil so as to form aclosure for the open, side or" the coil, as shown in Figs. 3 and 4. Thecoil 10 and tongue 11 are more or less resilient, and said tonguepreferably'so proportioned that the bent terminal of some eitherprojects under one portion of thecoil 1.0, or lies in close roximitythereto. In connecting the aevice D to the top coil of the spiral spring0 with which'it cooperates, it is only necessery to snap the top coil ofthe spring 0 into the coil 10 of top coil downwardly bet-ween the bentterminol of the tongue 11 and the portion of the coil 10 of the devicethat lies adjacent the bent terminal of said tongue, the tog) coil ofthe spring C bein designated by the reference character 12 in Figs. 3and 4e After said top coil 12 has been arranged in engagement with thedevice D in the manner above described and as illustrated in Figs. 3 and4, it will be impossible for said top coil to move accidentally outofengagement with the device D, on account oi the fact that the coil 12curely locked in the coil 10 of the devieeD by the tongue 11. that formsa closure'for the open side of the coil 10. I prefer to form the deviceD from a short coiled wring, but it is immaterial, so far as my .roadidea is concerned, now the intermediate portion of the device D isformed, so

long as said device is provided at one end with a, coil 10 for receiving"he member to which the device is conne ted and with a tongue ll thatlaps over one side of said coil and projects inwardly toward the con-wtor of some, so as to pre ent said member,

froin' moving out of the coil ilklwim aware of the feet that it is oldti) tie'the spire] springs of structures of the character hereinreferred to together by Vmezi'ns of short coiled springs provided attheir ends with books that receive the top the device D by pressing saidof the spring (J is se coils of the spiral springs, but one objection totying devices of the character referred to is be closed or bentdownwardly after they have been arranged in engagement with the Anotherobjectionable feature of tying devices of the character just somesometimes pull open suliicicntly to permit the spiral springs to jumpout of same when the structure is subjected to a heavy load or suddenshock.

My improved connecting device D is so constructed that it can bearranged in engegement with a spiral spring end securely locked to sameby one operation. Furtherthat' the hooks of some have to mentioned isthat the books at the ends of more, said device is so constructed thatit without departing from the spirit of my invention.

Having thus described my invention, what I claim, and desire, to secureby Letters Ritent, is; I

1. In a spiral bed spring, spring seat or similar structure, thecombination of a spiral spring, and e tying device provided with e coilfor receiving one coil of said spiral spring, seid tying device beingequipped with 3, tongue that is arranged at an angle to the coil of someso that it will lap over the coil of the spiral spring-end vent it frombecoming detached when said spring is snapped into engagement the coilof said tying device,

' 2. In. a bed spring, spring cent or sirnithus pro jecw inwardly towardthe center of the coil r of the tying device, thereby enabling thespiral spring to be connected to said device by snapping one coil of thespringuncler the tongue on. said device.

3. In e-bed spring, spring seat or simi-v lar structure, the combinationof soiral springs and short coiled springs that tie seid spiral springstogether, eachbf said short coiled springs being provided at its endswith integral tongues that extend approximately. lengthwise of thespring so as to form closures for the coils of some in which the coilsof the cooperating spiral springs are arranged by snaoping'seiclunder-said tongues.

4. A connecting device provided at one end with eco'il, and a tonguethat lapsover one side of. the coil of some and projects in I y l spirelspring-s weraiy toward the center of same, said (lemergme end with acoil that is adapted to receive the member with which the device atee,and a, resilieflt fiongue on said ievice WhlCh forms BVCIOSQIIB for theopen slde of said coil aid u'ndemwhich said member can 10 be snappedduring theoperation of connecting it to said device.

WILLIAM E. FRANK.

